分布式光纤检波器W-VSP采集技术应用实例

Application example of W-VSP acquisition technology of distributed fiber optic detector

为满足大港油田基于油藏渗流垂直地震技术攻关与应用研究的需要,获得井旁高精度速度场、高分辨率成像数据和储层反演成果,研究流体变化规律,为油藏渗流场研究提供高精度地震数据,2019年大港油田在港东某区块部署了W-VSP(Walkaway-VSP,井中二维地震)项目。在该区首次采用数字检波器和分布式光纤检波器两种接收仪器采集资料,获得了优质的光纤W-VSP资料。通过本次攻关,得到了品质较好的分布式光纤检波器资料,这说明分布式光纤传感技术值得在类似地区进行推广应用。

In order to meet the research needs of Dagang Oilfield based on reservoir seepage vertical seismic technology research and application(SVSP),obtain high-precision velocity field near the well,high-resolution imaging data and reservoir inversion results,study the law of fluid change,and provide high-precision seismic data for reservoir seepage field research,Dagang Oilfield deployed the WVSP(Walkaway-VSP)project in a block in Gangdong district in 2019.For the first time,two kinds of receiving instruments,digital geophone and distributed fiber geophone,are used to collect data,and high-quality fiber-optic W-VSP data are obtained.Through this research,the data of distributed fiber-optic geophone with good quality are obtained,which shows that the distributed fiber-optic sensor technology is worth popularizing and applying in similar areas.